Film-spacing device for cameras



Julie 19, 1928.

' G. F. ROSE FILMSPACING DEVICE FOR CAMERAS' Filed May 11, 1925 I not require any alteration in *the camera.V

j 'wherein :---l

Patented June 19, 1928.

r UNITED STATE ,GEORGE F. BOSE, OF HYNDSVILLE, NEW YORK.

FILiia-sriiciiverl DEVICE Fon. CAMERAS."

Application led May 11,

The present invention relates to film feeding mechanism for cameras of a generally similar nature to that disclosed in my apv plication relating to equal spacing 'device for film cameras, Ser. No. 339,723, abandoned April 22, 1925, and consists in the combinations f and arrangements of elements l hereinafter described and particularly set forth in the accompanying cla-ims.

The purpose ofthe invention is to provide a film feeding mechanism wherein the'winding or positively Aactuated reel will be automatically controlled to move- Vatamounts commensurate' with the increasing diameter of the winding film to the end .that there will be equal and uniform` spacing of the film for exposure. n

A further purpose of the invention is to provide a device of simpleA construction capable of effectively yaccomplishing these results in an easy andsimply performed manner, and the mechanism of which kkwill structure'for its application.

vThe invention is disclosed tration in the accompanying drawings,

Fig. 1 is a side elevational view lo'fa portionV of a camera showing the application` of the device; and Y y f Y Fig. 2 is a transverse sectional view thereof taken in line with the shaftof thefwinding roll.

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Referring to the construction in furtherV detail, 3 indicates the frame or casing ofthe camera withinywhich are suitably jo'urnaled the winding reel 4 and `unwinding reel 5 of the film 6 which traverses the usual` idler rollers 7; 8 represents the shutter mounted on t-he rollers 9, andr 10 is the usual curtain mounted on Vthe pairof rollers 11. These.

parts are ofthe usual or; otherwise suitable construction and noclaimtheretois madein this'case.

The winding reel 4 is adapted to be inter-n mittently operated from. a continuouslyop- @rating shaft`r 12 through a gearing `train rconsisting of a pinion13 onltheshaft 12*- that meshes with' a larger pinion 14, andi said pinion 14 inturnlmeshes withthe pinion 15 that is loosely vfjourn'aled on-the shaft 16 of the winding reel 4 as shown. The gear wheelk 15 is adapted vtov be constantly drivenfrom the prime mover 12 and intermittently operates the windingreel Vv4 through the novelv form of translating'mechanism vvconby way 'of illus- I 'the member 25.

1923.'y serial No. 638,252.V

stituting the subject-matter of,l this inven- Y tion. f Y

The translating device vper se consists of an actuator 17 loosely journaled on the shaft 16 and carrying a spring tensioned pawl 18. that coacts with the ratchet wheel 19v keyed `to the shaft of thewinding reel 4. Said actuatoris moved to operate in-a' clockwisedirection through a stud or other projection l20 on the wheel 15 that engages with the abutment 21 at the end of the lever'22 and which lever is pivotally mounted "at 23 on the actuator arm 17. l

The lever 22 is normally held under the tension ofspring24 to position the stopf21 in the path of movement of study 20, and by the lengagement of said stud and `abutment (20 and 21) vthe actuator 17 is moved in al on a rock shaft 26 and carries a roller 27 Ithat has constant engagement with the film as the latter is wound upon the reel 4, and

through such engagementthe said arm 25 is moved on its pivot aindefects alike movement of thetrip arm 28', also mounted fast on the'said shaft 26'and'xed to operate with The trip arm v28 carries a roller' 29 that is adapted to contact. with the earn` 30 carried by the lever'22, and through such engagementA said lever is tripped to disengage the -parts-20 and 251 and 'thereby free' the actuator 17 to be retracted under the tension ofthe spring 31 coiled around shaft 16 having one end anchored tothe'casing 3,.and

the other end fastened to arm 17 An'abutment or stopv 32 mounted onthe casing limits the return stroke of the actuator, and it iss-therefore from this position-that the-operating stroke ofY the actuator begins-for moving the windingreel.` 1 l v As gear 15 rotates, shoulder or'pin 20 contacts with shoulder 21, and in the'further ro'-Y tati-on of'gear 15 the lever 22 and arm 17fare carried around thel shaftl causing the pawl -18 to'turnfthe ratehet'wheel 19which rotates Ashaft 16 and-the winding/reelf't forth'epurl shaft 16.

.gressively amount of film is-drawn oi'f the supply reel '16 and .therefore the roller Q9 will act proportionately earlier on the member 30 .to trip the shoulder 2l and permit the parts Q2 and 17 to, return to their position of rest against stop 32, the shape of the can/130 that of a spiral with its center in the middle of In rother words, as the diameter of thereel increases with the winding of the film, the radius of curvature of the "cam decreases.

Itwill therefore be seen from the foregoing that the winding reel l will be given an `intermittent rotary motion through the actuator and that the degree or extent of each movement will be automatically con- `trolled by the constantly increasing diameter ofthe reel as it is wound for the purpose stated. 4

As the film is wound around the reel fl,

and thediaineter ofthe reeled film increases thereon, roller 29 Tis movedinwardly and acts further along the path of the cam 30 on a smaller radius.; This causes a progressively zearlier tripping ofy the lever 22 and the degree of rotation of the reel ll: is prodecreased, Vso that the same `5 in each cycle of operation. lPrior to the matically controlled by the material wound 'of film from reel 5 for an exposure..

lirst cycle of operation reel 4 is'practically empty and a substantially fullrevolution of said'reel is needed to draw the proper lengthl In other words, with the reel empty the arm 17 will turn through almost a complete revolu- Ation before the iollei''rlrives apart cam 30 to trip the levei-QQ. Fig. 1 shows the relation existing between roller 29 and part 30 prior' to the first cycle of operation when said part 30imust pass by roller 29,. l

It is robvious that those skilled in the art `may vary the details of construction and .arrangement fof parts without departing from the spirit of my invention, and therefore I do not wish to he limited to such features except as may be required by the claims.

What is claimed is: -v Y 1. In a winding apparatus, the combina-I tion of a reel, an actuator for moving the reel, a lever carried by said actuator, a

lever-to move the actuator and means anto-` upon the reel t0 release said lever from engagen'ient with the power element in such manner as to regulate the operating movement of the actuator, substantially as serl forth.

2. In a winding apparatus, the combinatien of a reel, an actuator operable to move y the reel, a lever carried by said actuator, a

the reel, a lever carried bysaid actuator and` provided with 'an abutment, a power ldriven elementadapted to engager vsaid lever. abutment and impart movement tothe actuator for moving the reel, a presser arm adapted to contact-with the material wound on theA reel, and a trip arm connected tosaid presser arm adapted to engage with said lever and release the same from the power driven element whereby to regulate-the o perating movement ofthe actuator,-substan-ag tially as set forth.y l

t. In a winding apparatus, the combination of a reel, an actuator operable to move the reel, a levercarried by said actuator and providing an abutment, a power driven element having a member adapted to engage the lever abutment and thereby.: impart movement tothe actuator-for moving the reel, a cam mounted on said lever, a presser arm adapted to contact with the material wound on the reel, and atrip arm actuated by said presser arm adapted to engage with said cani to' release said lever from engagement withthe power element whereby to regulate` the operating movement ofl the actuator, substantially .as set forth., Y

, 5. In a winding apparatus,the combina- -tion lof a reel provided with a ratchet, an

actuator arm mounted concentric' with the reel, a pawl on the actuator operable Ywith said ratchet to turn the reel, a retraction spring for the actuator, ailevervcarried by the actuatorand providing .anabutment, a power driven element having a member adapted to engage said lever abutment and impart movement to the actuator for mov- .ing the reel, a presser arm adaptedtoy contact with 'the material wound on the reel, Vand a trip arm movable by said presser larm 'to engage with and release said lever vfrom engagement with the power element where- 125 by to'regulate the operating movement of the actuator, substantially as set forth. power driven element for engaging said' l 6. In a winding apparatus, the combination of a reel having a ratchet, an actuator mounted, concentricv with f saidl ratchet, a pawl carried by said lever cooperable with said ratchet to move the reel, a retraction` spring for the actuator,xa lever pivotally mounted on the actuator and provided with an abutment, a power driven element having a member adapted to engage said lever and abutment and impart movement to the actuator for moving the reel7 a camv carried by said lever, a presser arm adapted `to contact with the material wound onrthe reel,

anda trip arm connected to said presser armV operable toengage said cam and release said lever from the power driven element whereby to regulate the operating movement of the actuator.

7. In a ilm feeding apparatus for cameras, the combination of a reel having a ratchet, an actuator mounted. concentric with said ratchet, a pawl mounted on the actuator cooperable with the ratchet to move the reel, a retraction spring for the actu'- ator, a lever pivotally mounted on the vactulever from ,engagement with the power el`ement whereby to regulate the operating stroke of the actuator, substantially as set.

forth.

In testimony whereof I aiix my signature.

AGEORGE F; Rose. 

